Runtime generation fails on "Batching Static" meshes

[Anatta336]

To reproduce:

• Place multiple mesh objects in the scene.
• Toggle on "batching static" for the objects.
• Import the sample runtime decal generator, placing it to overlap with the meshes.
• Add the static objects to the target list of the decal generator.
• Enter play mode and trigger the decal generator.

What happens: The generator fails to project any decals, giving a warning that target meshes aren't set to be readable. This warning is misleading; it appears even if the meshes created by the user are readable.

The problem appears to be that Unity's static batching replaces the original meshes with a combined mesh, which is not flagged to be readable.

What should happen: Ideally decal generation would succeed even in this case. If that's not feasible a more useful warning should be generated.

[Grootloops33]

Is there a fix for this yet? I'm experiencing the same issue.

Edit: I found that if you manually enable the mesh's read/write in the import settings, it works. But like you said, the decal should still render. And this is not an option for in-engine generated meshes.

[jinsw1081]

it is not work rutime spawn decal error occur